What are three common respiratory diseases affecting Americans?

1. Asthma

* A chronic respiratory disease that causes inflammation and narrowing of the airways, leading to wheezing, coughing, shortness of breath, and chest tightness.

* Affects an estimated 26 million Americans.

2. Chronic Obstructive Pulmonary Disease (COPD)

* A group of progressive respiratory diseases that includes emphysema and chronic bronchitis.

* Damages the lungs and causes difficulty breathing.

* Affects an estimated 16 million Americans.

3. Pneumonia

* An infection of the lungs that causes inflammation and fluid or pus to fill the air sacs.

* Can be caused by bacteria, viruses, or fungi.

* Affects an estimated 5 million Americans each year.